The Cherokee rear is about 2 1/2" wider than a stock A body rear. The spring perches are only about an inch wider than the A body, but that's irrelevant since the Jeep rear has the perches on top of the housing for hanging it under the leaf stack. The shock mounts are also welded to the axle.
Cherokees NEVER came with rear disc brakes, that was Grand Cherokee (only the early Grands, up to '98? Not positive of exact year- had 4 1/2" bolt circle) and Liberty only.
Maybe use one of those rears? Different suspensions (coil springs, control arms and panhard bars) and different widths yet again.
So, you'll have to cut all the bracketry off, weld on spring perches at your width while setting an appropriate pinion angle, and get a set of Mopar shock plates and U bolts for 8.25, 8.75, or D60 (no, your 7.25 parts won't work, the axle tubes are a different diameter). Then get some custom offset wheels to make up for the different axle width. And figure out how to adapt the parking brake cables to your car. And have your driveshaft shortened about 1.25-1.5". And if using a Cherokee housing, swapping the GC/Liberty discs onto it.
Will it fit? A school bus rear end will fit if you're willing to put the time and money into it.
It's not a bolt in, but can be a viable option depending on your skill set and expectations.
A much easier option would be to find a later-model A body 8.25 and hardware (bolt-in, except for driveshaft length) and swap the GC/Liberty discs onto it.
